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CIDR Range

155.181.0.0/16

65.5K IPs /16 United States ARIN
Addresses
65,536
65.5K
Sub-ranges
50+
within this block
PTR Density
0.0%
1 of 65.5K IPs have PTR

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

67/100
Moderate
How this score is built

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

Ranges inside 155.181.0.0/16

Geolocation

First and last addresses in 155.181.0.0/16

155.181.0.0/16 runs from 155.181.0.0 to 155.181.255.255.

First 16
Last 16

RIR Ownership History

Atom feed ⇲

Allocation changes captured from regional internet registry (RIR) delegation files, re-imported every six hours.

Date Event From To
2026-05-10 New Allocation — US

Frequently Asked Questions

What is 155.181.0.0/16?

155.181.0.0/16 is a CIDR network block containing 65,536 IPv4 addresses (from 155.181.0.0 to 155.181.255.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.

Who owns the 155.181.0.0/16 network?

The 155.181.0.0/16 range is allocated to an unknown organization from United States.

Last updated: 2026-10-27 06:39:05 UTC
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